About William Cowan
William Cowan is a director at Ratio Therapeutics.
Experience
This experience comes from SEC filings. The years are when the filings name William Cowan in the role, so the role may have started earlier or lasted longer.
Ratio Therapeutics, Inc.
Director
2026 · Boston, MA
Develops targeted radioactive medicines for people with cancer.
Key Colleagues at Startups
The people William Cowan works with at each company, as listed on that company's latest Form D.
Ratio Therapeutics, Inc. · Form D, Jul 31, 2026
SM
Scott MacDonald
Executive officer
MB
Marc Becker
Chief Financial Officer and Chief Operating Officer
AH
Albert Holman
Director
BI
Brandon Ingersoll
Director
AG
Allan Green
Director
JH
John Hoppin
Chief Executive Officer and director
JB
John Babich
Chief Scientific Officer and director
SW
Susan Whoriskey
Director